I have the e-Bay replacement window on order from David Hard. I am hopeful that it is just the answer? Have lined up another pair of hands and look forward to the installation after the shipment arrival. My Z has been garaged and the top is in very good shape. Hopefully, it will not be too much of a problem. Thanks to DKindig I have a number of good suggestions to work with. Good luck on you project. Anxious to hear how you make out. Dan